Fraud alerts can help prevent an identity thief from opening any more accounts in your name. Contact the toll-free fraud number of any of the three consumer reporting companies below to place a fraud alert on your credit report. You only need to contact one of the three companies to place an alert. The company you call is required to contact the other two, which will place an alert on their versions of your report, too. If you do not receive a confirmation from a company, you should contact that company directly to place a fraud alert.

Once you place the fraud alert in your file, you're entitled to order one free copy of your credit report from each of the three consumer reporting companies, and, if you ask, only the last four digits of your Social Security number will appear on your credit reports. Once you get your credit reports, review them carefully. Look for inquiries from companies you haven't contacted, accounts you didn't open, and debts on your accounts that you can't explain. Check that information, like your Social Security number, address(es), name or initials, and employers are correct. If you find fraudulent or inaccurate information, get it removed.

2. Close the accounts that you know, or believe, have been tampered with or opened fraudulently.

Call and speak with someone in the security or fraud department of each company. Follow up in writing, and include copies (NOT originals) of supporting documents. It is important to notify credit card companies and banks in writing. Send your letters by certified mail, return receipt requested, so you can document what the company received and when. Keep a file of your correspondence and enclosures.

When you open new accounts, use new Personal Identification Numbers (PINs) and passwords. Avoid using easily available information like your mother's maiden name, your birth date, the last four digits of your Social Security number or your phone number, or a series of consecutive numbers.

If the identity thief has made charges or debits on your accounts, or has fraudulently opened accounts, ask the company for the forms to dispute those transactions:

For charges and debits on existing accounts, ask the representative to send you the company's fraud dispute forms.

For new unauthorized accounts, you can either file a dispute directly with the company or file a report with the police and provide a copy, called an "Identity Theft Report," to the company.

o If you want to file a dispute directly with the company, and do not want to file a report with the police, ask if the company accepts the FTC's ID Theft Affidavit (PDF, 56 KB). If it does not, ask the representative to send you the company's fraud dispute forms.

o Filing a report with the police and then providing the company with an Identity Theft Report will give you greater protection.